This repository was archived by the owner on Jan 26, 2026. It is now read-only.
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Repository files navigation

CypherDB - Archived

After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive for a short while before being deleted. There are no meaningful code contributions to preserve.

About CypherDB

CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.

The openCypher organization is evaluating how we can best support this technology and its community. Our initial goals are to:

  1. Explore whether CypherDB can serve as a reference implementation of ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors

This is an evaluation phase. We're committed to transparent communication with both the existing Kuzu community and potential contributors as we determine the best path forward. Our decisions will be guided by what serves the broader graph database ecosystem.

The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project name belongs to the original commercial venture, and this is not that.

Database Features

CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads on very large databases and provides a set of retrieval features, such as a full text search and vector indices.

Core features:

  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser

The focus of this fork is on supporting an open-source, community-based project that is a reference implementation of openCypher.

Build from Source

You can build from source using the instructions provided in the developer guide.

Disclaimer

This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.

License

CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..

About

Embedded property graph database. Working towards ISO-GQL feature coverage

opencypher.github.io/cypherdb/

Topics

cyphergraph-databaseoss

Resources

Readme
MIT license

Code of conduct

Code of conduct

Contributing

Contributing

Security policy

Security policy
Activity
Custom properties

Stars

13 stars

Watchers

3 watching

Forks

2 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jan 26, 2026. It is now read-only.

BranchesTags
Repository files navigation
CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
About
Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
Topics
cyphergraph-databaseoss
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Custom properties
Stars
13 stars
Watchers
3 watching
Forks
2 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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This repository was archived by the owner on Jan 26, 2026. It is now read-only.

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CypherDB - Archived
After evaluation of the stated goals for this fork, we have decided to not maintain the project. It will remain a public archive
for a short while before being deleted. There are no meaningful code contributions to preserve.
About CypherDB
CypherDB is a fork of Kuzu, an embedded graph database that is now a public archive.
The openCypher organization is evaluating how we can best support this
technology and its community. Our initial goals are to:
  1. Explore whether CypherDB can serve as a reference implementation of
ISO-GQL's mandatory features
  2. Determine what sustainable open source stewardship looks like for this project
  3. Learn about the community of users and contributors
This is an evaluation phase. We're committed to transparent communication
with both the existing Kuzu community and potential contributors as we determine
the best path forward. Our decisions will be guided by what serves the broader
graph database ecosystem.
The extensive s/kuzu/cypherdb/ is to acknowledgement that the original project
name belongs to the original commercial venture, and this is not that.
Database Features
CypherDB is an embedded graph database. It is optimized for handling complex analytical workloads
on very large databases and provides a set of retrieval features, such as a full text search and vector indices.
Core features:
  • Flexible Property Graph Data Model and Cypher query language
  • Embeddable, serverless integration into applications
  • Native full text search and vector index
  • Columnar disk-based storage
  • Columnar sparse row-based (CSR) adjacency list/join indices
  • Vectorized and factorized query processor
  • Novel and very fast join algorithms
  • Multi-core query parallelism
  • Serializable ACID transactions
  • Wasm (WebAssembly) bindings for fast, secure execution in the browser
The focus of this fork is on supporting an open-source, community-based project that is a reference
implementation of openCypher.
Build from Source
You can build from source using the instructions provided in the developer guide.
Disclaimer
This repository is not an official Neo4j product or project. It is maintained by Neo4j employees or contributors in a personal or experimental capacity. The content here is provided “as is,” comes with no guarantees, and is unsupported.
License
CypherDB is licensed under the MIT License, with initial support from Neo4j, Inc..
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Embedded property graph database. Working towards ISO-GQL feature coverage
opencypher.github.io/cypherdb/
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